https://www.bbc.com/russian/news-58409017
https://analytics.hvylya.net/235801-ob-istoricheskom-edinstve-russkih-i-ukraincev-ideologiya-voyny
https://newtimes.ru/articles/detail/204979?fcc
https://jamestown.org/program/biden-putin-summit-failed-to-reverse-downturn-in-bilateral-relations/